Round 1: Datone Jones, DE/DT (UCLA)

San Francisco's top four needs are safety, defensive line, cornerback and tight end.

Unless the 49ers sign a starting-caliber free safety in the coming weeks, they'll be sure to take the top safety available with one of their first two picks.

The other pick could be spent on a stud interior lineman, and if Datone Jones is available, the Niners should bite.

Jones often lined up inside for UCLA, and he was very productive in that role. He had 19 tackles for loss and 5.5 sacks in 2012.

The 6'4", 283-pound run-stuffer could play nose tackle or defensive end in San Francisco's 3-4 defense. That means he could help out Glenn Dorsey and Ian Williams at nose this year and take over for Justin Smith in the long term.

Round 5: Robert Lester, SS (Alabama)

With Donte Whitner entering his contract year, the 49ers should be in the market for a long-term strong safety.

Robert Lester would be a steal late in the fifth. He'd battle Craig Dahl, C.J. Spillman and Darcel McBath for the primary backup safety role (assuming Eric Reid or a free-agent signee takes the starting free safety role).